Motorcycle chair



FIG. 1 is a right side view of a motorcycle chair showing our new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof; and,

FIG. 5 is a top view thereof; the bottom view is not a part of the claimed design. 

The ornamental design for a motorcycle chair, as shown and described. 